The 32-page booklet, which is illustrated throughout with instructive diagrams and colour photographs, covers all aspects of this topic, from the reasons for carrying out dielectric breakdown tests to advice on instrument selection.

Details are provided of the US and international standards that apply to oil testing, and invaluable guidance is provided on how to decide the optimum testing frequency, and how oil samples should be taken in order to minimise the risk of contamination. Preparation of the test vessel is also discussed, as is the interpretation of test results, including an explanation of how to decide whether the results are valid.

Common issues, such as discovering that brand new oil fails the breakdown test, are explored, and a detailed explanation is provided of exactly how dielectric breakdown voltage testers work, as well as how to choose the best type of instrument for specific applications.

Megger’s new publication, “Oil Dielectric Breakdown Voltage Testing” has been produced by experts with wide experience of oil testing, and is written in a clear and readily understood style. The emphasis throughout is on providing practical information that will help readers to achieve accurate and dependable results in practical, real-world situations.